Pliers



A. MAE.

PLIERS. APPLICATION rm MAY 20, 1-920;

1301 52 Patented Deo.'27, 1921.

A3 mun A if;

PATENT OFFICE.

monmm trim Haven, commcrxcur.

Application-filed ma 20,

i' 'mall whum it may conccm:

Be it known that LAwrorv' MAE, a citizen ofatlhe United States, residing atNew Haven, in -the county" of New Haven and State of Golmeeticut, "have invented certain new and useful Improvements in Pliers, of which the following is a specification reference being had therein to the accompanying drawings.

This "inventionrelates to new and impmved hereof the type having parallel aws. v tie the. object' of this invention,

amongotherthings; toproduce pliers of this general character wherein the handles, instead of being pivotally connectedtogether asvis the practice, are connected withanindegendent element andthereby have only an in fleet-"connection with the jaws, to provide independent jaw plates, an alligator H maximum 1 ation, and which may be constructed at the shear operated by the jaws, and in other ways to produce pliers that will have the efliciency, be "powerful in open minimum cost and assembled with little labor. To these and other ends, my invention consists inthe pliers having certain details 1 ofconstruction and combinations of parts as wil'l be hereinafter described andmore particularly-pointed out in the claims. i In thedrawings which accompany this specification, wherein like reference charactersdesignate like parts in the several fignresr' v j Figure 1 is anelevation ofmy improved pliers complete 3 *Fig. 2-is a front endview thereof;

Fig; 3isa' fragmentary detail view of the 1 forward end of the pliersshowing thehandles broken off and partly in-section and the jaws and adjacentmechanism in full lines; and Fig. 4 is an elevation of the jaw having the alligator shear connected therewith.

In the ractice of my invention, I provide the hand cs 10 which are curved both in cross-section and longitudinally for strength and convenience in manipulation. These handles are pivotally connected at one end to fulcrum plates 11 by the screws 12, one

- of these plates being provided upon each of the opposite sides of the handles and each being provided with an inwardly projecting depression or recess 13, within which is a slot 14. j

The numeral 15 designates one of the jaws and the numeral 16 the other j aw, these having oppositely disposed fiat faces 17 and Specification of Letters Patent.

PatentedDec. 27, 1921.

1920. ewn mqesassr.

rearwardly projecting .tangs 18 that slide through the cradles 19, secured to. the hendles 10 by the screwsor rivets 20. A. pin "21 thatextends across said cradle bears against one side of the tang 18 while the other side rests against the inner face of one wall oi the cradle, as shown in Fig. 3, and this assurestproper alinement of the tang within the cradle.

Upon'each side of the jaws are two jaw plates 22 that diagonally cross each other and are then: pivotally connected by a pin, rivet or screw 24 that also projects through the slot 14 in the adjacent-fulcrum plate.

Each of the jaw plates is pivotally connected x with one of the jaws at its outer end by the pin 28, preferably passing entirely through the jaw and also forminga plvot connection for one of the jaw plates upon the opposite side thereof. The opposite end of each of these aw plates is pivotally connected withdol lc ofthe handles 10by the pin, screw orrivet 20. v

The handles 10 when moved toward each other swingu )on the pivots 12; This moves the inner on s of the jaw plates together, each of which swings upon the pin 20 and both rock upon the pin 24 causing the outer ends thereof to move toward eachother and carry with them thejaws 15 and 1.6. This relative rocking movement of the jaw plates imparts a limitedforward movement to each of the pins 24 that isaccommodated by the slots '14 in the fulcrum plates. The tangs 18 and cradles 19 cotiperate in holding the jaws so that they move in parallel lines.

The jaw 16 is provided with upwardly projecting cars 25 between which projects a lug 26 integral with the alligator jaw 27 and through which ears and lug projects the pintle 28 to support the supplemental 0r alligator aw 27 in relation to the jaw 16. The fixed jaw 16 is provided with a cuttingedge 29 and the alligator jaw 27 with a slmilar cutting edge 30 which are opposite each other and contact with each other when the alligator jaw is closed. This alligator jaw is closed through the contact of the arm 31 thereon that passes through the recess 32 in the jaw 16 and contacts with the face 17 of the jaw 15 when the said jaws are moving toward each other; and is opened by the finger 33 that projects over t contacts with the rounded back 34 of the alligator jaw 27 when the jaws 15 and 16 are being moved away from each other through e recess 32 and v ets may be used if desired, and the heads thereof may be flush or projecting as herein shown, and the rivets 2.4 may be similarly constructed. In any .case two pivots 24: are used, one for each of the fulcrum plates 11, so that the space between the jaw plates 22 is open and unobstructed for the passage of an article of considerable length betweeh the jaws and the handles 10.

Minor changes and alterations may be I made within my invention, aside from those by Letters Patent is:

herein suggested; and I would therefore have it understood that I do not limit my- ,selfto the exact construction herein shown and described, but claim all that falls fairly within the spirit and scope of the appended claims.

WVhat I claim as new and desireto secure i l. 1 Pliers composed of a pair of handles, a pair of fulcrum plates to each of which said 7 handles are pivotally connectedat opposite ends-thereof, jaws slidably movable in relation to said handles, a pair of jaw plates upon each side of the jaws, and pivotally connected with each other, with said jaws, and with'said handles, one of said pivotal connections having a slidableengagement with said fulcrum plates.

2. Pliers composed of a pair of handles, a

pair of fulcrum plates to each of which said handles are connected at opposite ends thereof, one of said plates being upon each side of said handles, a pair of jaws slidably movable in relation to said handles, a pair of jaw plates, one of 'said plates being upon each side ofisaid jaws and diagonally crossing each other and at opposite ends pivotally connected to said jaws and to said handles,

each of these pairs of jaw plates having a hinged pin connection at theircrossing point, which pin has a slidlng engagement with one therewith, jaws, means for operating said jaws from Said handles, a supplemental jaw connected with one of said jaws and operated in one direction by the other of said jaws, and means independent of said jaws for actuating said supplemental jaw in one direction.

4. In pliers, the combination with a pair of handles, of fulcrum plates connected therewith, jaws, means for operating said jaws from said handles, a supplemental jaw connected with one of said jaws and operated in one direction by the other of said jaws, and means independent of said jaws for actuating said supplemental jaw in one direction, said means being connected with one of said handles.

5. Pliers composed of a pair of handles, a pair of slotted fulcrum plates to each of which said handles are pivotally connected at opposite. ends thereof, jaws slidably movable in relation to said handles, and a pair of jaw plates upon each side of the jaws and pivotally connected with each other, with said jaws, and with said handles, the pivot pin of the pivot connection between each pair of said jaw plates projecting through the slot in the adjacent fulcrum plate.

6. In pliers, the combination with a pair of handles, one of which is provided with a finger, a fulcrum plate connected therewith, jaws, means for operating said jaws from said handles, and a supplemental jaw connected with one of said jaws and operated in one direction by the other of said jaws and in;the opposite direction by said finger.

In testimony whereof, I have hereunto 

